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Tests.startUnit = function () {
  var canvas = document.getElementById('gl');
  var gl = canvas.getContext(GL_CONTEXT_ID);
  return [gl];
}

Tests.testDeleteBuffer = function(gl) {
  assertThrowNoGLError(gl, "number ", function(){ gl.deleteBuffer(1); });
  assertGLError(gl, gl.NO_ERROR, "null", function(){ gl.deleteBuffer(null); });
  assertThrowNoGLError(gl, "0", function(){ gl.deleteBuffer(0); });
  assertThrowNoGLError(gl, "false", function(){ gl.deleteBuffer(false); });
  assertThrowNoGLError(gl, "true", function(){ gl.deleteBuffer(true); });
  assertThrowNoGLError(gl, "{}", function(){ gl.deleteBuffer({}); });
  var tex = gl.createTexture();
  assertThrowNoGLError(gl, "tex as buf", function(){ gl.deleteBuffer(tex); });
  var buf = gl.createBuffer();
  assertOk(function(){ gl.deleteBuffer(buf); });
  assertOk(function(){ gl.deleteBuffer(buf); });
  assertOk(function(){ gl.deleteBuffer(buf); });
  assertOk(function(){ gl.deleteTexture(tex); });
}

Tests.endUnit = function(gl) {
}

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